Distribution: Occurring east of the Cascades crest where endemic to Kittitas and Yakima counties in Washington.
Habitat: Cliff crevices in rocky canyons.
Flowers: May-July
Origin: Native
Growth Duration: Perennial
Conservation Status: Threatened in Washington (WANHP)
Pollination: Bees, butterflies, flies, apomixis?
Several stems from a perennial taproot, sprawling, branched and leafy, especially near the tip.
Leaves with stiff, blunt hairs and fine glands, wedge-shaped to obovate, up to 4 cm. long and 1.5 cm. wide, deeply tri-lobed, the lobes broad.
Heads terminating the branches, the disk 8-12 mm. wide; involucre 5-6 mm. high, densely glandular; rays 25-30, light pink or pinkish-purple, 5-7 mm. long and 1.5 mm. wide; disk corollas 3-4 mm. long, pale yellow; pappus of 10-15 capillary bristles.
PNW Herbaria: Specimen records of Erigeron basalticus in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Erigeron basalticus checklist entry
OregonFlora: Erigeron basalticus information
E-Flora BC: Erigeron basalticus atlas page
CalPhotos: Erigeron basalticus photos